4565440 has 56 divisors (see below), whose sum is σ = 11868912. Its totient is φ = 1658880.

The previous prime is 4565413. The next prime is 4565443. The reversal of 4565440 is 445654.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 4565399 and 4565408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4565443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2872 + ... + 4168.

Almost surely, 2^4565440 is an apocalyptic number.

4565440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4565440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5934456).

4565440 is an abundant number, since it is smaller than the sum of its proper divisors (7303472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4565440 is a wasteful number, since it uses less digits than its factorization.

4565440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325 (or 1315 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 4565440 is about 2136.6890274441. The cubic root of 4565440 is about 165.8928034871.

It can be divided in two parts, 4565 and 440, that added together give a palindrome (5005).

The spelling of 4565440 in words is "four million, five hundred sixty-five thousand, four hundred forty".